Asmoday on the side of Celestia or Abyss

I have been seeing a lot of comments about how Asmoday had joined sides with the Abyss and I am confused on whether it's true or not, since I didn't see any indication of that in the time I had played the game, so uh, I would like to know if Asmoday had actually joined the Abyss.

I thought that she is on the side of the Traveler, even at the Temple of Space, I was under the impression that she was keeping watch over him like she did in "Time and Space for You"

So is that true?